Thermometer



Patented Dec. 7, 1920.

THERMOMETER.

L. MARTIN AND E. L. UNDERWOOD.

APPLICATION FILED NOV-12,1918- RENEWED OCT. 30,1920. .1,36.1,271.

0 1 1 x M fl f ww M p, n. flnfl i 4 y //////////////fi E v a w 4 w al flunk. m m

UNITED STATES PATENT OFFICE.

LESLIE MARTIN, OF FALCONER, AND EDWARD L. UNDERWOOD, 0F JAMESTQWN, NEW YORK, ASSIGNORS TO AMERICAN MANUFACTURING CONCERN, A CORPORATION OF NEW YORK.

rnnnivroivrn'rnn.

Specification of Letters Patent. I Patented Dec. 7, 1920.

Application filed November 12, 1918, Serial No. 262,139. Renewed October 30, 1920. Serial No. 420,828.

To all to 7mm it may concern:

Be it known that we, LnsLIn MAIrrIN and EDWARD L. UNDERWOOD, citizens of the United States, residing, respectively, at the village of Falconer and city of Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Thermometers, of which the following, taken in connection with the accompanying drawings, is a specification.

The invention relates to improvements in mounts or supports for thermometers, and similar devices. Such instruments have been used very successfully as advertising novelties. Great difliculty, however, has

been experienced inprotecting the bulb and v the connecting lower portion of the tube from inquisitive youths Who wonder as to the kind of liquid employed or from pure mischief break the bulb and render the instrument useless.

Accordingly, it is desired to protect said bulb in such a manner that the presence of the bulb will not be suspected by the uninitiated; and our improvement consists in providing a simple board mount which thoroughly protects the bulb and tube of the thermometer or barometer and at the same time provides a simple and easy means for mounting said tube and bulb so that said tube is set exactly correct at the thirty-two and eighty-two degree marks and is held firmly in place, the mount having plenty of room for cementing the tube against endwise movement, said mount being made from the flat board with alined end to end lengthwise grooves on the front and rear sides so placed as to permit said quick and accurate placing of the tube and showing only the needed portion of the tube, the bulb and lower portion of the tube being thoroughly protected in the groove from the rear side in such a manner that its position is not suspected by the observer from the outer side of the instrument; and the invention consists in the novel features and combinations hereinafter set forth and claimed.

In the drawings, Figure 1 is a front elevation of the improved thermometer with the tube in position thereon. Fig. 2 is a lengthwise sectional view at line 2'3 in Fig.

1, showing the construction and arrangement of the instrument. Fig. 3 is a slmllar sectional view of the upper portion of the mount at line 23 in Fig. 1, showing the manner of placing the upper end of the tube in order to correctly hold the same. Fig. 4 is a rear elevation of the mount, the central portion being broken away and showing the slot in the rear side for the bulb and lower portion of the tube. Fig. 5 is a sectional view at line 5-6 in Fig. 2 looking upward showing the perfect alinement of the frontal groove for the tube with the larger rear groove for the bulb; and Fig. 6 is a similar sectional view at line 5-6 looking downward.

Like characters of reference refer to corresponding parts in the several views.

The numeral 10 designates the wood panel which has the holes 11 and 12 in the top and bottom of the same for attachment to a support.

The instrument tube 13 with its bulb 14: is attached within the board mount 10 in a shallow lengthwise front groove 15 for the upper portion of the tube 13 and a deep rear groove 16 for the bulb 14 and lower portion of the tube 13. The grooves15 and 16 are in alinement with and open into one another, being centrally located lengthwise of the board 10 so that said shallow front groove 15 enters the bottom of the deeper rear groove 16 central of its upper end. The rear groove 16 has the thin portion 241 covering the same on the front side, so that no indication is given of its existence except the disappearance of the tube 13 at its lower end.

The grooves 15 and 16 are so placed as to one another that the tube 13 may be inserted at an angle, as shown in dotted line in Fig. 2, through the mouth formed by the lower end of the front groove 15 as it opens into the upper end of the rear groove 16; the grooves 15 and 16 being so proportioned to one another as to their depth as to receive the tube 13 and hold and brace its opposite sides firmly against the bottom of the front groove 15 for the upper part of said tube 13 and the bottom of the rear groove 16 for the lower part of said tube and the bulb 14-, as shown in Fig. 2.

This simple arrangement holds the tube 13 firmly in line in the groove 15 and leaves the front outer surface of the board 10 perfectly flat over the groove 16 so that, as stated, the presence of said groove is not surmised except by the initiated. This simple arrangement also assists in so firmly holding the tube 13 which is made in the usual form with the teat 1-7 on its upper endwhich enters theopening 1-8 formed by the prick punch 19 which tool is used in setting the tube 13 correctly in position.

It should be understood that all thermometertubes are provided with the slight marks 20, in. the glass tube side at 32, and 82. Few of the thermometer tubes are 'of the, same. length, hence the points 32'and182 are. depended upon to correctly place said tube, and: the teatv L7,withthe, aid of the cement 21 at the upper end of the tube; 13; holdssaid tube firmly against end-wise; movement, while the straps;- 22 hold the tube. 13 against outward, movement from, the front groove 15; The groove 16 isepreferably covered by a plate 23 which is attached to the rear sideof the board 110 as shown in Figs. 2, 4L, 5 and 6.

It. is apparent that this: simple mounting, overcomes all the difficulties: that havebeerr experienced in such mounts at an exceedeingly low eost, at the same time; giving a fine appearance tothe mount, thereby providing; ant advertising thermometer in which the scale; and tube interfere as little as: possible with the advertising space;

We claim as new 1 A thermometer or like instrument comprising; a panel having front; and" rear facing groovesthere-in' opening into oneanother to receive the upper portion of the registering tube of said instrument in said front facing groove and the bulb and lower portion of said registering tube in said rear facing groove, means to hold said tube in a fixed position in said grooves, the front of said panel over said rear facing groove corresponding in appearance with the remainder of the front to conceal the position of said groove and the bulb. therein. 7

2. In a thermometer, thecombination of a registering tube; having a bulbat one end, a woodpanel having a central lengthwise front-l facing groove of suitable depth to receive the: upper portion of said registering tube; and a lengthwise rear facing central groove: opening into said front facing groovetoreceive said registering tube through the opening between: said grooves from the rear side, said grooves adapted as to depth. to bind and. hold, on the opposite sides of said tube when pressed lengthwise into, the same toholdit in line, means for holding said. tube against endwise move ment in. said grooves, and a covering on the rear side of said panel for said rear facing groove to: protect said bulb. 7

In testimony whereof we have afiixed our signatures in the; presence; of twowitnesses.

LESLIEJMZARTIND p 7 ED-VVARD L. UNDERNVOOD Witnesses:

E. L. BUCHANAN, MARY L. Bonus; 

